8" Alpine R-Type Subwoofer with Dual 2 Ohm Voice Coils - SWR8D2

Introducing A New Level of Type-R Performance

These redesigned fifth-generation Type-R subwoofers include an abundance of enhanced features to achieve staggering power handing capabilities, cleaner output, deeper bass extension and ultra-responsive control than ever before.

Extreme bass fits in more places

The Type-R Subs have been completely redesigned again to offer more installation flexibility and application versatility to build the ideal sound system. At 4-1/2" for the 8", 5 - 7/8” for the 10”, and 6 - 3/8” for the 12”, these new designs offer a near 20% reduction in mounting depth, while offering even greater output capability.

More Excursion = More Output

The new FEA-Optimized Motor Structure together with our revolutionary High-Amplitude Multi Roll (HAMR) Suspension Design gives the new Type-R Subwoofers the highest X-max and SPL output in the category.

With a real world, measured 21mm of X-max, allow the new Type-R Subwoofers to deliver the best-in-class bass output, ultra-low distortion, and unparalleled sound quality.

More Motor Force = More Control

Starting with a new ten piece, segmented magnet structure, the new Type-R subwoofer has over 20% more motor force than its predecessor delivering more accurate, louder and cleaner bass with even more control. This new magnet assembly is also an integral part of the next generation of Alpine’s Patented Radial Vented VC cooling system.

Keep it Cool = Keep it Playing

Alpine’s Patented Radial Vented VC Heatsink and Airflow Management System (US Patent #7,634,101) helps to minimize power compression and ensures reliable long playing time by actively eliminating output-robbing heat away from the Voice Coil. The new one-piece cast aluminum frame with integrated shorting sleeve uses the entire frame as a heatsink, to allow for sustained power output and handling, even in the most extreme of applications.

FEA Optimized = Maximum Linearity

Alpine’s Patented Compound Radius Curve pole geometry ensure for an ultra symmetrical magnetic field, while optimizing flux density to greatly reduce distortion, while further improving power handling and output.

Improved Power Handling

The oversized black anodized 40 mm voice coil offers more than 35% more surface area, allowing for increased power handling to 350W RMS / 1000W Peak. To get the best performance, we recommend you pair Type-R subs with Alpine’s new PDX digital amplifiers.

4 Unique Alpine Technologies

FEA Optimized HAMR Surround

The High-Amplitude Multi Roll Surround Design allows for extreme excursions without sacrificing valuable cone area. FEA Optimized for linearity and made with injection-molded Santoprene®, the HAMR surround is a key part of the suspension system that allows for extreme excursions with accurate, distortion-free control.

FEA Optimized Spider w/reinforced Layer Spider Integration

Ensures reliable and consistent control of the tinsel-leads to eliminate any possible mechanical noises or interference typical of many high-excursion designs.

Redial Vented VC Heat Sink & Airflow Management System

Actively manages voice coil temperatures by forcing air directly across the heatsink system.

FEA Optimized Machined CRC Motor Structure

Creates a symmetrical magnetic field while optimizing flux density to greatly reduce distortion, while further improving power handling and output.

Power Handling

CEA-2031 Power Rating: 350 W RMS

Power Range: 150 W-350 W RMS (efficace)

RMS Power Handling: 350 W RMS (efficace)

Peak Power Handling: 1000 W PEAK (de crête)

Dimensions

Mounting Depth: 4-1/2′′

Mounting Diameter: 6-15/16′′

Displacement: -0.050 ft3

Added Volume: +0.035 ft3

General

Frequency Response: 30 Hz-200 Hz

Diaphram

Material: Reinforced Parabolic Cone Structure with Poly-Mica Dust Cap & Pulp-Kevlar Cone Body

Design: 2-Piece Structural Parabolic

Surround

Material: Injected Molded Santoprene®

Design: High Amplitude Multi-Roll

Spider

Material: Nomex®

Design: Progressive Conex® Spider with Reinforced Layer Tinsel Leads

Voice Coil

Material: 38mm Voice Coil with High-Temp

Design: 4-Layer DVC Winding on Spiral Cut

Motor Structure

Pole Geometry: Extended Pole Geometry

Configuration: Compound Radius Curve

Frame

Material: Cast Aluminum

Design: Perimeter Vented Heat Transfer

Terminals

Layout: One Side

Design: Heavy Duty 8 gauge Push with Housing, Banana Plug Jumper

Tinsel Leads

Design: Reinforced Layer Spider Integration (Patent #6,810,988)

Gasket

Design: Concealed Mount Gasket (Integrated Grille System Ready, US Pat #7,760,900)